Online education for gem enthusiasts
- 4,916 members
- 2,121 articles
- 103 gemology businesses
- 94,185 Facebook fans
“IGS is a Godsend for me!”
– Charlie Bernheiser, IGS Member
“Thank you for the fantastic adventure!”
– John Parrot, IGS Member
Ways to get your gem fix for free
Gem Learning Center
Hundreds of free articles on the science, identification and techniques of gemology.
Free Email Course
Receive our free 3-part email course: The Essential Art of Identifying Gemstones.
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2,121
Articles
4,916
Members
103
Directory Listings
94,185
Facebook fans
The world’s best gem articles, published weekly.
The most recent articles
IGS Pro Membership
Take your gemology career to the next level
- Certification Course
- A listing in our business directory
- Access to our up-to-date gemstone value guide
- Access to premium articles on tools and techniques
“Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it’s a no-brainer.”
Paul Bierker, Paul Michael Designs
Jeweler, IGS Pro Member
Paul Bierker, Paul Michael Designs
Jeweler, IGS Pro Member
Gem Price Guide
The world’s best online resource for gemstone appraisal
Over 15 years, we have assembled detailed pricing and value information for appraising over 70 different gemstones. The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones.